Problems

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Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 7817 1114 14% 0.00 1482 736 50% 6.9
10 Kinds of People 16183 3349 21% 0.01 2758 1979 72% 3.9
2048 7470 3473 46% 0.00 3376 2880 85% 2.3
3D Printed Statues 8592 3953 46% 0.00 3665 3285 90% 2.0
3D Printer 688 127 18% 0.00 265 97 37% 8.6
3-Sided Dice 2168 190 9% 0.00 355 131 37% 8.6
4 thought 7593 2562 34% 0.00 2563 2139 83% 2.6
A1 Paper 4857 1431 29% 0.00 1414 1128 80% 3.4
Aaah! 26026 12087 46% 0.00 10842 10095 93% 1.6
Abandoned Animal 1545 338 22% 0.03 409 293 72% 5.3
ABC 11595 5235 45% 0.00 5006 4547 91% 1.8
Ab Initio 856 168 20% 0.09 124 79 64% 7.4
Above Average 7226 3018 42% 0.00 2986 2680 90% 2.0
A+B Problem 7188 699 10% 0.03 1034 339 33% 8.4
A Brief Gerrymander 201 45 22% 0.15 49 30 61% 8.4
Abstract Art 262 79 30% 0.00 80 60 75% 6.6
Absurdistan Roads II 547 197 36% 0.00 195 133 68% 6.8
Absurdistan Roads III 1368 384 28% 0.02 374 288 77% 5.5
Access Points 359 135 38% 0.01 124 98 79% 4.6
A Classy Problem 8538 2166 25% 0.01 1900 1458 77% 4.6
ACM Contest Scoring 6116 3828 63% 0.00 3389 3195 94% 1.6
Add 'Em Up! 338 111 33% 0.01 110 84 76% 5.0
Adding Words 9294 2192 24% 0.00 2151 1655 77% 3.6
A Different List Game 6577 460 7% 0.00 818 162 20% 9.2
A Different Problem 27743 10328 37% 0.00 9535 8277 87% 2.2
Adjoin the Networks 1834 487 27% 0.00 437 342 78% 5.7
Administrative Difficulties 1060 241 23% 0.03 257 175 68% 6.2
Advanced Causal Measurements 57 18 32% 0.10 22 18 82% 6.2
Adventure Begins 241 78 32% 0.06 83 64 77% 4.0
Adventures in Moving -- Part IV 930 267 29% 0.00 234 200 85% 4.5
A Favourable Ending 1483 385 26% 0.00 361 273 76% 4.7
A Feast For Cats 1913 679 35% 0.00 453 382 84% 4.2
A Flea on a Chessboard 386 82 21% 0.01 92 67 73% 4.8
Air Conditioned Minions 4685 1283 27% 0.00 1355 1016 75% 3.9
Airline Hub 1744 323 19% 0.01 351 198 56% 6.7
Airport Coffee 814 175 21% 0.09 168 120 71% 7.2
Airport Construction 3275 420 13% 0.02 341 182 53% 7.4
Airport Logistics 56 13 23% 0.00 19 13 68% 7.5
Airports 385 109 28% 0.11 114 81 71% 6.8
Akcija 6618 2928 44% 0.00 2671 2366 89% 2.1
Aladin 751 76 10% 0.10 121 29 24% 8.2
Alchemy 108 16 15% 0.02 30 16 53% 8.9
Alea iacta est 32 13 41% 0.34 17 13 76% 6.9
Alehouse 152 62 41% 0.03 49 36 73% 4.9
Alice in the Digital World 3066 824 27% 0.01 794 627 79% 3.9
Alien Codebreaking 225 11 5% 3.23 34 8 24% 9.1
Alien Numbers 2114 1095 52% 0.00 1066 968 91% 2.0
A List Game 7591 2251 30% 0.00 2121 1784 84% 2.9
All about that base 2691 1055 39% 0.00 1032 864 84% 3.0
All Different Directions 1146 491 43% 0.00 463 404 87% 2.6
Allergy Test 446 127 28% 0.00 144 74 51% 7.8
All Friends 843 165 20% 0.00 151 79 52% 8.9
All is Well 50 13 26% 0.03 13 11 85% 5.7
All Just A Dream 1731 392 23% 0.05 277 193 70% 6.6
All Pairs Shortest Path 8146 1449 18% 0.02 995 700 70% 6.0
Almost Perfect 6912 1599 23% 0.00 1712 1328 78% 3.7
Almost Union-Find 5996 1065 18% 0.02 960 553 58% 6.7
Alphabet 1368 675 49% 0.00 688 581 84% 3.0
Alphabet Animals 1578 490 31% 0.00 502 400 80% 3.2
Alphabet Spam 7361 4601 63% 0.00 3732 3588 96% 1.3
Alternative Bracket Notation 204 85 42% 0.00 91 75 82% 5.3
Altruistic Amphibians 373 95 25% 0.24 93 67 72% 5.1
Amalgamated Artichokes 3660 1644 45% 0.01 1486 1292 87% 2.8
Amanda Lounges 1386 389 28% 0.03 364 285 78% 5.6
A Mazing! 2454 531 22% 0.09 260 196 75% 5.2
Amazing Adventures 325 84 26% 0.02 96 66 69% 5.8
Amazing Race 281 75 27% 0.39 85 60 71% 7.2
Ambiguous Result 263 56 21% 0.02 86 53 62% 8.2
Amsterdam Distance 1294 568 44% 0.00 615 504 82% 2.9
A Multiplication Game 702 226 32% 0.00 257 189 74% 4.9
Anagram Counting 3272 1255 38% 0.00 1220 1013 83% 3.1
Andrew the Ant 253 72 28% 0.06 82 62 76% 5.1
A New Adventure 752 123 16% 0.01 139 93 67% 6.0
A New Alphabet 10217 4561 45% 0.00 4247 3921 92% 1.8
An I for an Eye 592 136 23% 0.00 160 110 69% 5.2
Animal Classification 1549 353 23% 0.03 303 201 66% 6.7
An Industrial Spy 1458 767 53% 0.02 605 518 86% 3.3
Another Brick in the Wall 2993 1470 49% 0.00 1416 1296 92% 1.9
Another Candies 7187 1955 27% 0.00 2046 1686 82% 2.7
Another Dice Game 91 64 70% 0.00 59 53 90% 4.0
Another Query on Array Problem 1481 209 14% 0.05 324 146 45% 7.5
Antenna Placement 127 58 46% 0.00 42 34 81% 5.4
Anthony and Cora 849 215 25% 0.00 257 179 70% 5.4
Anthony and Diablo 2767 950 34% 0.00 953 819 86% 2.6
Antiarithmetic? 1267 236 19% 0.01 301 174 58% 7.1
Ants 3286 1445 44% 0.00 1168 1018 87% 2.7
Apaxiaaaaaaaaaaaans! 11913 7270 61% 0.00 6434 6163 96% 1.4
Apostrophe Catastrophe 99 24 24% 0.00 25 17 68% 6.5
Appalling Architecture 512 148 29% 0.00 133 113 85% 3.7
Apparatus 682 169 25% 0.01 136 102 75% 5.7
Apple Market 461 93 20% 0.07 113 58 51% 8.3
Apples, Cherries, and Mangos 406 123 30% 0.02 126 91 72% 6.4
A Prize No One Can Win 1779 717 40% 0.00 668 588 88% 2.4
Aquarium Tank 470 130 28% 0.00 125 98 78% 5.2
Aqueduct Construction 196 71 36% 0.01 55 47 85% 6.8
A Question of Ingestion 1236 305 25% 0.00 290 222 77% 5.8
Arable Area 293 65 22% 0.04 66 42 64% 8.1
Arachnophobia 327 99 30% 0.14 88 74 84% 5.1
A Random Problem 313 80 26% 0.00 77 53 69% 6.3
A Rational Sequence 1676 557 33% 0.00 582 429 74% 4.5